Results 11 to 20 of about 17,200 (256)

Origin of reversible oxygen redox reactions in high energy density layered oxides

Cell Reports Physical Science, 2021
Summary: Oxygen redox reactions (ORRs) are considered a new strategy in reaching a high-energy density for rechargeable batteries. Here, we propose the concept “band coherency” for identifying the origin of reversible ORRs in alkali-excess compounds, i.e.
Gwanghyeon Choi, Jaewoon Lee, Sojung Koo, Sangeon Park, Duho Kim   +4 more
doaj   +1 more source

Improved Electrode Reversibility of Nanosized Li1.15Nb0.15Mn0.7O2 through Li3PO4 Integration

Electrochemistry, 2023
A lithium-excess cation-disordered rocksalt oxide, Li1.15Nb0.15Mn0.7O2, is synthesized and tested as positive electrode materials for battery applications. Although nanosized Li1.15Nb0.15Mn0.7O2 delivers a large reversible capacity using cationic/anionic
Yanjia ZHANG, Benoît D. L. CAMPÉON, Naoaki YABUUCHI   +2 more
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Elucidation of Anionic and Cationic Redox Reactions in a Prototype Sodium-Layered Oxide Cathode [PDF]

ACS Applied Materials & Interfaces, 2019
The ever-increasing demand for large-scale energy storage has driven the prosperous investigation of sodium-ion batteries (NIBs). As a promising cathode candidate for NIBs, P2-type Na2/3Ni1/3Mn2/3O2 (NaNMO), a prototype sodium-layered oxide, has attracted extensive attention because of its high operating voltage and high capacity density.
Chen Cheng, Siyuan Li, Tiefeng Liu, Yujian Xia, Lo-Yueh Chang, Yingying Yan, Manling Ding, Yue Hu, Jinpeng Wu, Jinghua Guo, Liang Zhang   +10 more
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Unraveling the Cationic and Anionic Redox Reactions in a Conventional Layered Oxide Cathode [PDF]

ACS Energy Letters, 2019
Increasing interest in high-energy lithium-ion batteries has triggered the demand to clarify the reaction mechanism in battery cathodes during high-potential operation.
Ning Li, Shawn Sallis, Joseph K. Papp, James Wei, Bryan D. McCloskey, Wanli Yang, Wei Tong   +6 more
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Structural and Thermodynamic Understandings in Mn‐Based Sodium Layered Oxides during Anionic Redox

Advanced Science, 2020
A breakthrough utilizing an anionic redox reaction (O2−/On−) for charge compensation has led to the development of high‐energy cathode materials in sodium‐ion batteries.
Seok Mun Kang, Duho Kim, Kug‐Seung Lee, Min‐Seob Kim, Aihua Jin, Jae‐Hyuk Park, Chi‐Yeong Ahn, Tae‐Yeol Jeon, Young Hwa Jung, Seung‐Ho Yu, Junyoung Mun, Yung‐Eun Sung   +11 more
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Multi‐Electron Reactions Enabled by Anion‐Based Redox Chemistry for High‐Energy Multivalent Rechargeable Batteries [PDF]

Angewandte Chemie International Edition, 2020
AbstractThe development of multivalent metal (such as Mg and Ca) based battery systems is hindered by lack of suitable cathode chemistry that shows reversible multi‐electron redox reactions. Cationic redox centres in the classical cathodes can only afford stepwise single‐electron transfer, which are not ideal for multivalent‐ion storage.
Zhenyou Li, Bhaghavathi P. Vinayan, Piotr Jankowski, Christian Njel, Ananyo Roy, Tejs Vegge, Julia Maibach, Juan Maria García Lastra, Maximilian Fichtner, Zhirong Zhao‐Karger   +9 more
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A comprehensive cognition for the capacity fading mechanism of FeS2 in argyrodite‐based all‐solid‐state lithium battery

EcoMat, 2023
Sulfide solid state electrolyte (SSE) possesses high ionic conductivity and great processability but suffers from narrow electrochemical window. Conversion sulfide cathode FeS2 has higher specific capacity and moderate redox potential, making it ...
Zhan Wu, Wenkui Zhang, Yang Xia, Hui Huang, Yongping Gan, Xinping He, Xinhui Xia, Jun Zhang   +7 more
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Anion and water involvement in hydrous Ir oxide redox reactions in acidic solutions [PDF]

Journal of Electroanalytical Chemistry, 1999
Abstract The stoichiometry of the Ir oxide reaction in sulfuric acidic solutions was investigated by tracking the pH dependence of its principal Ir(+III)/Ir(+IV) redox peaks, as well as monitoring the film mass change with in-situ quartz crystal microbalance measurements. A pH dependence of ca.
Birss, Viola I., Bock, C.
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A Quasi-Intramolecular Solid-Phase Redox Reaction of Ammonia Ligands and Perchlorate Anion in Diamminesilver(I) Perchlorate [PDF]

Inorganics, 2021
The reaction of ammoniacal AgNO3 solution (or aq. solution of [Ag(NH3)2]NO3) with aq. NaClO4 resulted in [Ag(NH3)2]ClO4 (compound 1). Detailed spectroscopic (correlation analysis, IR, Raman, and UV) analyses were performed on [Ag(NH3)2]ClO4. The temperature and enthalpy of phase change for compound 1 were determined to be 225.7 K and 103.04 kJ/mol ...
Lara Alexandre Fogaça, Laura Bereczki, Vladimir M. Petruševski, Berta Barta-Holló, Fernanda Paiva Franguelli, Miklós Mohai, Kende Attila Béres, Istvan E Sajó, Imre Miklós Szilágyi, Laszlo Kotai   +9 more
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Exploring the Charge Compensation Mechanism of P2-Type Na_0.6Mg_0.3Mn_0.7O₂ Cathode Materials for Advanced Sodium-Ion Batteries

Energies, 2020
P2-type sodium layered transition metal oxides have been intensively investigated as promising cathode materials for sodium-ion batteries (SIBs) by virtue of their high specific capacity and high operating voltage.
Chen Cheng, Manling Ding, Tianran Yan, Kehua Dai, Jing Mao, Nian Zhang, Liang Zhang, Jinghua Guo   +7 more
doaj   +1 more source